Twilight: well, the tiara is a bit uncomfortable and kind of an eyesore
Rainbow: that carriage ornaments would only slow me down
Fluttershy: oh well...the gleam that comes off it would scare all my animals away and cause issues
Applejack: you expect me to wear jewelry? ain't gonna happen partner
Pinkie Pie: oh that could be fun! I don't really get jewelry though seeing as we don't even wear clothes but Rarity says that jewelry is a mares best friend and I always enjoy getting friends!
Rarity: MINE! I mean...that would be excellent idea darling